Amore experienced colleague mentions to you that you should aim for a dissolved oxygen concentration around 1.0 mg/l at day 5 of the experiment. they show you data from a similar wastewater spill that happened last year, in which the bod5 of the stream water was 60 mg/l. from your previous experiment, you found that the dissolved oxygen concentration at day 0 was 10 mg/l. based on this information, what dilution factor, p, should you try in your reactor?